Donald Arthur Schulze (born September 27, 1962) is a former American professional baseball pitcher and current minor league pitching coach.

He pitched all or part of six seasons in the majors, between 1983 and 1989, for the Chicago Cubs, Cleveland Indians, New York Mets, New York Yankees, and San Diego Padres.

Since 2006, Schulze has worked in the Oakland Athletics organization as a pitching coach.

He was with the Arizona League Athletics in 2006, the Kane County Cougars in 2007 to 2008, and the Stockton Ports in 2009 to 2010.

This biographical article relating to an American baseball pitcher born in the 1960s is a stub.